CONTENTS

1 Introduction 2
References 3
Description of an international route 4
General routing principles 5
Specific routing possibilities through the IPDN 5.1 Routing possibilities required for maintaining the quality of
service 5.2 Service characteristics associated with a route 5.3 Specific conditions associated with a route 6
Routing procedures applicable to international interworking between PDNs
of the same type and also between PSPDNs and ISDNs and/or PSTNs 7
Identification of IDSEs and ISDNs involved in an international call 8
Multiple IDSEs provided by one Administration 8.1 In the originating or destination country 8.2 In a transit country 9
International routing plan
10 Network information required to
enable optimum routings to be planned
Annex A – Terms and definitions related to routing in the PDN
Annex B – The use of satellite links in overall CSPDN routes B.1 General considerations B.2 Principles in each PDN
Annex C – Routing information
Appendix I – International routing plan – Examples of routes I.3 Rerouting